A synthesis reaction, also known as a combination reaction, occurs when two or more reactants combine to form a single product. This type of reaction can be represented by the general equation: A + B → AB, where A and B are the reactants and AB is the product. Synthesis reactions are common in both organic and inorganic chemistry and are essential for creating new compounds. These reactions are important in various fields, including biochemistry, where they help form complex molecules like proteins and nucleic acids. Additionally, synthesis reactions are utilized in industrial processes, such as the production of ammonia through the Haber process, which combines nitrogen and hydrogen gases.